Very nice numbers here from Sound Performance with their turbo E46 M3. Now that Horsepower Freaks is officially dead and people are fighting over what remains the door is open for tuners to take the reigns of the turbo E46 M3 market. Sound Performance appears to be one of those stepping up to fill the void and this is quite a way to do it. How does 1070 wheel horsepower and 830 pound-feet of torque at the wheels on a Mustang dyno sound?

This is definitely one of the stronger E46 M3's out there as although they exist there is just a handful in the four digit wheel horsepower area. Very impressive and much respect.

There's going to be a significant low end sacrifice with the turbo size needed to reach these power levels on a 3.2 liter.

i don't have anything to compare a 7675 to haha... but going by the vargas stage 3 graph.... how MUCH bigger than twin GTX28's is it? the n54 makes more power on the big twins all the way to a bit over 5000 rpm before tapering off a lot

then this one shoots off like a rocket between 5-5500 haha

then again, aren't the stage 3's predicted to be able to make power (regardless of an other limiting factor lol) up to the 900 odd range?